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Delidded: CPU mods, cooling and old PCs that still earn their keep

The LGA 771 to 775 Xeon mod

Run a 45 nm Xeon in a Core 2 board: what the adapter sticker does, which chipsets cope, and how to get through the BIOS side. Five pages, in order:

  1. Motherboard compatibility
  2. Choosing a Xeon
  3. Step-by-step instructions
  4. Troubleshooting

Start with page 1 »

Latest builds

CPU coolers that still fit LGA 775

Ananya Kulkarni

LGA 775 uses 72 mm hole spacing, not the 75 mm of later Intel sockets. How to read socket lists, push pins versus backplates, and height and RAM clearance.

Every build, newest first »

BIOS, microcode and CPU lists

Modkit calculators

LGA 771 compatibility checker

Pick a Xeon and your chipset, get a pass or check strip.

FSB overclock calculator

Core clock, bus rating and memory speed from FSB and ratio.

Cooler TDP headroom

Estimate overclocked heat against a cooler rating.

PC power supply calculator

Add up an old build and pick a sensible supply size.

Parts bin picks

Parts links can earn us a commission.

  • Clone

    Macrium Reflect X Home (disk imaging and cloning)

    Clones an old hard drive to a new SSD and keeps image backups; paid software for Windows.

    Order from Macrium Software

Open the whole parts bin »

Web design notes

Beginner lessons with code you can paste and run: the CSS tutorial (two small projects), the JavaScript tutorial and an online HTML editor to try them in.